论文部分内容阅读
通过对不同不育系所配杂交水稻组合在单、双株寄裁条件下的秧苗素质研究，结果表明：Ⅱ-32A所配组合的总根数、白根数、白根率和分蘖性能等指标均较优，特别是白根率高，根系活力和分案能力强，但繁茂性稍差。冈46A所配组合其突出特点是叶面积和苗高占优势，繁茂性好，秧田各时期的于物质积累能力较强，但根系活力稍差，白根率较低。二汕A所配组合的特点是在发根力和根系活力上稍占优势，白报率较高。D汕A所配组合无突出特点。寄款方式对秧苗素质影响很大，主要表现在前期和后期的差异大。前期双株秧稍占优势，但在后期刊单株放的优势很明显。因此，在土壤肥沃，水源充足的地方，为培育壮秧，增加秧龄弹性，应提倡单株寄栽。
The results showed that the total number of roots, number of white roots, percentage of white roots and tiller performance of the combinations of Ⅱ-32A Excellent, especially the white root rate, root activity and divisional ability, but less robust. Gang 46A with the combination of its outstanding features of leaf area and height of the seedling height, good longevity, seedling accumulation of various substances in the strong ability of the period, but the root activity is slightly worse, the white root rate is lower. A combination of two Shanshan is characterized by a slight dominance in the hair root and root activity, higher whistleblower rate. D Shantou combination with no outstanding features. Sending methods have a great impact on the quality of seedlings, mainly in the early and late differences. Pre-double plantlets slightly dominant, but the advantages of the late release of plant strains is obvious. Therefore, in the fertile soil, adequate water sources, to cultivate strong seedling, seedling age flexibility should be promoted, should be promoted to single plant.